﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Recursion //递归
{
    class Program
    {
        static void Main(string[] args)
        {
            Song();
        }

        public static int i = 0;

        public static void Song()
        {
            Console.WriteLine("门前大桥下");
            Console.WriteLine("游过一群鸭");
            Console.WriteLine("快来快来数一数");
            Console.WriteLine("二四六七八");

            i++;
            if(i >= 3)
              {
                return;
              }
            Song();
        }
    }
}
